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Beyond the Standard Model

- Professionally researched theories... strings, branes, & LQG
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Jan16-12 Greg Bernhardt
announcements, btsm, event Sticky Thread Pinned: BtSM Event Announcements ( 1 2 3 ... Last)
This sticky is for announcements of pertinent scientific events, such as conferences, seminars, or public talks. This...
Aug20-14 11:17 AM
marcus
68 66,842
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Jul14-12 08:32 AM
ZapperZ
1 26,655
I'm beginning a research on the different approaches to QG (or also calssical QM) where the attempt to introduce the...
Feb5-09 09:36 PM
exponent137
4 3,447
Petr Horava attempts to start at this paper a small quantum gravity theory, like Loop Quantum Gravity, except that he,...
Feb5-09 03:35 AM
MTd2
8 9,332
I've been looking for (free) papers (probably 100+ pages) that are introductions to eleven-dimensional supergravity....
Feb4-09 03:16 PM
xepma
1 1,742
This is driving me nuts. Hope someone can explain this to me. To classify conformally inequivalent tori, one...
Feb4-09 03:03 PM
xepma
4 1,314
hi, Do the addition of non-linear terms in action play any significant role in string theory?? if so, what is its...
Feb4-09 11:43 AM
anuradha
3 1,357
Hi folks ! I have always felt that string theory can be generalized somewhat further via the inclusion of knotted...
Feb2-09 11:24 PM
Alwi
0 1,458
Maybe someone could inform me a little on what I'm talking about, because, honestly, I have no idea. If 11...
Feb2-09 03:24 PM
Coin
2 1,160
I have a theory about fast variable G, (a few approaches) but almost no comments on this. ...
Feb1-09 08:09 PM
exponent137
0 1,084
In a video I watched, which I can't find now, Leonard Susskind briefly mentions something about scientists recently...
Jan31-09 09:15 PM
atyy
1 1,598
Is the number of lepton generations in string theory restricted to 3? Or is this "landscape dependent"? I don't...
Jan30-09 08:29 PM
JustinLevy
6 1,624
Questions: Where can I obtain the most advanced published papers regarding valid unification theories? If there are...
Jan30-09 04:11 PM
Potential
3 1,329
Anyon are particular 2 dimensionsional objects and so is the worldsheet critical superstrings. But given that those 2...
Jan30-09 10:29 AM
xepma
3 1,362
In Szabo's book on string theory he calculates the vacuum to vacuum one loop (genus one) diagram. The...
Jan28-09 08:45 PM
nrqed
2 1,254
ABSTRACT Parity no conservation in the  decay processes is considered as fundamental property of weak...
Jan28-09 12:11 PM
Stanislav
0 1,137
I am wondering if string theory says anything about how only some vibrational patterns lead to mass while a few don't,...
Jan28-09 10:42 AM
Naty1
0 1,249
Why do strings only have one dimension (or maybe branes have 2 dimensions)? Why aren't oscillating volumes (like a...
Jan27-09 03:14 PM
Coin
9 1,929
Does anyone know if M-Theory is that same as Superstring Field Theory?
Jan26-09 08:15 PM
Coin
3 1,454
I don't have much of a math/physics background, undergraduate physics and calculus is where I stopped... yet I find...
Jan26-09 07:27 PM
bockerse
136 29,536
Is there not an inherent paradox in Amelino-Camelia’s DSR (Doubly special relativity)? Every solid piece of matter...
Jan26-09 07:02 PM
jambaugh
3 1,025
In a recent lecture on String Theory, we encountered the divergent sum 1+2+3+.... when calculating the zero mode...
Jan26-09 03:17 AM
Thomas Larsson
2 2,602
http://streamer.perimeterinstitute.ca:81/mediasite/viewer/FrontEnd/Front.aspx?&shouldResize=False scroll down the...
Jan24-09 11:47 AM
Core2duo
126 12,490
In a recent lecture on bosonic String Theory, we encountered the divergent Sum 1+2+3+... when calculating the zero...
Jan24-09 05:54 AM
Orbb
0 2,336
In a recent lecture on bosonic string theory, we calculated the Virasoro operators, especially the zero mode,...
Jan24-09 05:50 AM
Orbb
0 1,910
http://sciencewatch.com/dr/erf/maps/08decerfBaggETRFM/#156486489 This is an interesting development in String/M,...
Jan23-09 12:48 AM
marcus
1 2,030
Why we are searching quantum gravity effect at the planck scale? The question seems very stupid (and may be) but let...
Jan22-09 06:58 AM
luxxio
3 1,694
http://arxiv.org/abs/0901.2984 Asymptotic safety in higher-derivative gravity Dario Benedetti, Pedro F. Machado,...
Jan20-09 11:51 PM
marcus
1 2,097
Ok, I doubt this belongs in this forum since it's purely speculative, but I was curious what work has been done in the...
Jan20-09 11:48 AM
Jim Kata
3 1,332
I've read a lot of arguments in support of LQG over string theory, mainly focusing on ST's lack of background...
Jan19-09 04:11 PM
marcus
24 3,305
How i can see the right lorentz invariance in lqg?
Jan19-09 10:22 AM
humanino
15 2,477
I was just wondering what string theory says, if anything, about mass energy equivalence...anyone have any...
Jan18-09 06:41 PM
Orbb
2 1,369
First let me express my ignorance about this subject so please forgive me if these questions have well-known answers....
Jan18-09 02:26 PM
atyy
3 1,087
At the end of David Gross' UC Berkeley public lecture on string theory he mentions that emergent spacetime may play an...
Jan17-09 09:20 AM
atyy
1 1,256
Can anyone point me in the direction of a paper, website, etc. which essentially discusses the current state of theory...
Jan17-09 12:53 AM
daschaich
7 1,456
http://www.edge.org/3rd_culture/wilczek09/wilczek09_index.html Like his book, Lightness of Being, the interview is...
Jan16-09 10:14 PM
marcus
0 1,695
I'm having a bit of trouble understanding a past exam paper that i'm revising for where it asks. How the the...
Jan16-09 08:41 PM
pazmush
0 1,331
Cambridge press says available as of around 1 March, so in a couple of months. Samples are available of page proofs...
Jan16-09 01:24 PM
exponent137
1 1,536
I was wondering if my understanding of string theory was right and if not could someone please correct me. 1.)Is...
Jan15-09 10:02 PM
humanino
4 1,963
Topological Strings = 3 Superstrings = 10 Bosonic strings 26 Tensionless strings = arbitrary Do you know of any...
Jan14-09 09:28 AM
Demystifier
17 1,993
My question is simple and straight forward - how does a 1-dimensional string "convert" to a zero-dimensional point...
Jan12-09 04:36 PM
derek.basler
3 2,078
As suggested by Marcus, I have read the whole paper and decided to start a discussion of Kober's paper by asking a few...
Jan12-09 02:15 PM
Blackforest
5 1,860

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